<%@ page contentType="text/html;charset=UTF-8" language="java"%>
<html>
  <head>
     <title>登陆</title>
     <style>
     .error{color:red}
     </style>
  </head>
  <body>
     <div class="error">${error}</div>
     <form action="${pageContext.request.contextPath}/formfilterlogin" method="post">
                        用户名:<input type="text" name="username"></input><br/>
                        密码:<input type="password" name="password"></input><br/>
         <input type="submit" value="登陆"></input>
     </form>
  </body>
</html>